Saw-mill set-works



(No Model.) Q 4Sheet.s-Sheet 1. T. S. WILKIN.

SAW MILL SET WORKS.

No. 317,256. P -g n 9d May 5, 1885.

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4 Sheets-Sheet 2.

(No Model.)

T. s. WILKIN.

SAW MILL SET WORKS. No. 317,256,

Patented May 5. 1885 (No Model.) 4 Sheets-Sheet 3.

T. S. WILKIN. SAW MILL SET WORKS.

No. 317,256. Patented May 5, 1885..

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7 (No Model.) 4 Sheets-Sheet 4. T.'S. WILKIN.

SAW MILL SET WORKS.

No. 317,256. Patented May 5; 1885.

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THEODORE S. WILKIN, OF MILWAUKEE, YVISGONSIN.

SAW-M I LL SET-WORKS.

EEPECIPICATION forming part of Letters Patent No. 317,256, dated May 5, 1885.

Application filed November .16, 1884.

To all whom it may concern.-

1 Be it known that I, THEODORE S. WILKIN, of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Saw-Mill Set-Works, of which the following is a specification.

My invention relates to saw-mill machinery; and it consists broadly,in the combination, with a saw-mill carriage and with the knees, dogs, and other mechanism thereof, of telescopic pipes for delivering steam or other fluid thereto, and compensating for the travel of the carriage, the movement of the knees, &c.

The present application relates rather to the general features of the plan than to the details, which latter constitute the subjects matter of other applications filed by me.

The purpose of this invention is to substitute steam-power for manual labor for all work connected with the handling of a log or cant on a saw-mill carriage, and thereby not only to lessen the labor and decrease the cost of the work, but also to insure exactness and synchronism in the action of the mechanism,-

which results are difficult of attainment under the present system of manual operation. Thus it is found in practice that where several knees are arranged upon the same carriage for handling very large and heavy logs it is impracticable for one man to turn the set-shaft to operate all the knees, and it becomes necessary to employ a man for each knee, the result of which is an unequal movement of the knees, a quicker movement of one than of another or others, and a consequent throwing of one end of the log out of reach of the dogs, or aspringing of the log and waste of lumbcr,as well as the production of inferior boards. So, also, it is at present necessary to employ a man at each knee to actuate the dogs, or to employ a complicated system of levers to actuate two sets simultaneously, as has been proposed, though not generally adopted, so far as I am aware. I have, however, devised steam mechanism by which the knees and the dogs may be entirely actuated and controlledby a single operator or attendant from one point, thus not only doing away with the necessity of a number of attendants, but also bringing all the controlling devices at one point, so that the attendant is not required to travel about (No model.)

over the carriage, but may give his entire attention to the proper control of said devices.

In the drawings, Figure 1 is a perspective view of a saw-mill carriage, showing the telescopic steam-pipe connected therewith; Fig. 2, a similar view showing mechanism connected with the telescopic supply-pipe; Fig. 3, a perspective view showing the steam-dog mechanism connected with the telescopic pipe; Fig. 4, a perspective view showing both the mechanism connected with the telescopic steam-pipe; Fig. 5, a detail View; Fig. 6, a plan view of the entire plant.

A indicates the carriage, which may be of any length,proportion, or material, or, in other words, may be of ordinary construction, provided with wheels B, and arranged to travel in a straight line upon rails O to carry the'log past the saw, as usual.

D indicates a supply-pipe to convey steam, air, or other fluid under pressure to the carriage to actuate any mechanism that may be mounted thereon, said pipe sliding into a larger pipe, E, which may in turn slide into a third, and so on to any required extent, but which second pipe will ordinarily connect di- 'rectly with a steam-generator, air-compressor, or other source of supply. A packing-gland,F, is provided to encircle each sliding pipe where it enters the next larger pipe, to avoid escape of steam or other fluid. The movement of the carriage is limited, as usual, and the sliding pipe or pipes of course made of such length as to allow a full travel of the carriage. The steam-pipe D, which, together with thelarger encircling pipe,E,is placedclose to the ground, is bent upward or furnished with a vertical branch, a, at its outer end and passes through the sillor timber G of the carriage to a chest, H, from which branch pipes conduct the steam, air, or other fluid to the mechanism to be operated thereby, suitable provision being made for any movement of such parts relatively to the chest, as hereinafter set forth. From the upper branch, a, the pipe D is continued throughout the length of the carriage, or so much thereof as it may be necessary to supply with steam.

In Fig. 2 I have illustrated the application of my invention to the sliding knee of a sawmill head-block, the knee being connected by steam-dog mechanism and the steam-knee a piston rod or stem, 1), Fig. 4, to a piston moving within a stationary cylinder, I, permanently and immovably secured upon the head-block J. From the chest H pipes 0 and d are carried to the opposite ends of the cylinder I, and within the chest is placed a slidevalve, K, Fig. 5, or any convenient form of valve adapted to permit steam to enter the cylinder at one end and to escape at the other end in either direction or order required and according to the direction in which the knees are to be moved. Each knee will be provided with a longitudinal screw beneath it, passing through a depending arm of the knee, and serving'to prevent the knee from movingexcept as permitted by the rotation of the screw. Each screw is furnished with a bevel gearwheel,and a shaft, L, extending lengthwise of the carriage, is provided with similar gears, each meshing with one of the gears of the screws. lhe valve mechanism is applied to each knee. By this arrangement, which is more fully shown and described in another application, I am enabled to control all the knees bya movement ofa lever, M, which is connect- .ed with a valve mechanism of each knee, as

indicated in Fig. 1, the power necessary to move the knees being wholly-afforded by the steam, and the screws merely serving to regulateand control such movement. 7

In Fig. 3 the improvement is illustrated-as applied to the dogs of a saw-mill head-block, the steam or other fluid being conveyed through a flexible double pipe, N, to opposite ends of a cylinder, 0, the piston of which is connected by a rod, 1?, with the operatinglever Q of the dogging mechanism, and the movements of the piston being controlled in precisely the same manner as in the case of.

the knees.

In Fig. 4 the two arrangements are shown combined.

Telescopic pipes may be employed to convey steam or other fluid from the main-supply pipe to the cylinders of the dogging mechanism, as indicated in another application filed by me.

Having thus described my invention, what I claim is 1. In combination with a traveling saw-mill carriage, a telescopic pipe one end section of which is connected with a source offluid-pressureand the other made fast to the carriage, substantially as and for the purpose set forth.

2. In combination with a saw-mill carriage, A, and with a steam generator, a telescopic pipe, E D, the section E being connected with said generator, and the section D being attached to the carriage and arranged to slide within section E, substantially as shown and described, whereby the pipe is adapted to convey the steam to the carriage without impeding the travel thereof.

3. In combination with a saw-mill carriage and with the set-works or dogging mechanism thereof, a fluid pressure reservoir, and a telescopic pipe connecting said reservoir and the saw-mill carriage, and serving to convey the fluid to said mechanism, substantially as explained.

THEODORE S. WILKIN. Witnesses:

FRED. A. LARKIN, CHARLES ALLIs. 

